For those who are working, interview your IT in-charge and ask him/her to describe the computer database systems used in the company.

in the small company where I'm currently working, we dont uses computer in our database system, we only use record books and manualy record the company's internal and external transaction. like recording of company's net income, expenses, inventories and supplies, the employees salary records and ect..
we often encounter complains about some employee's income losses, unrecorded work hours. and we often have hard times finding some previews records we needed because of not properly organized files.